Measurements of atmospheric concentrations of trichlorofluoromethane, dichlorodifluoromethane and carbon tetrachloride by aircraft sampling over the British isles
作者： F.J Sandalls , D.B Hatton
DOI: 10.1016/0004-6981(77)90160-3
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摘要: Abstract Samples of air have been collected over Britain and its coastal waters in areas remote from anthropogenic sources pollution analysed for trichlorofluoromethane, dichlorodifluoromethane carbon tetrachloride. The samples were during 1975 early 1976 at altitudes up to 8000 m. overall mean background levels these compounds the period March-August inclusive was found be 169 ± 30 pptv ∗ 231±36 59 9 backgrounds January–February 1976, inclusive, 165 8 240±20 65 4for
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